mips: mscc: build FIT image for Ocelot

Ocelot now has a u-boot port, allow building FIT images instead of relying
on the legacy detection and builtin DTB.

Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Reviewed-by: James Hogan <jhogan@kernel.org>
Signed-off-by: Paul Burton <paul.burton@mips.com>
Patchwork: https://patchwork.linux-mips.org/patch/19632/
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org

diff --git a/arch/mips/boot/dts/mscc/Makefile b/arch/mips/boot/dts/mscc/Makefile
index 3c6aed9..9a9bb7e 100644 (file)
--- a/arch/mips/boot/dts/mscc/Makefile
+++ b/arch/mips/boot/dts/mscc/Makefile
@@ -1,3 +1,3 @@
-dtb-$(CONFIG_LEGACY_BOARD_OCELOT)      += ocelot_pcb123.dtb
+dtb-$(CONFIG_MSCC_OCELOT)      += ocelot_pcb123.dtb
 
 obj-$(CONFIG_BUILTIN_DTB)      += $(addsuffix .o, $(dtb-y))

diff --git a/arch/mips/generic/Kconfig b/arch/mips/generic/Kconfig
index ba9b2c8..08e33c6 100644 (file)
--- a/arch/mips/generic/Kconfig
+++ b/arch/mips/generic/Kconfig
@@ -35,13 +35,13 @@ config LEGACY_BOARD_OCELOT
        depends on LEGACY_BOARD_SEAD3=n
        select LEGACY_BOARDS
        select MSCC_OCELOT
+       select SYS_HAS_EARLY_PRINTK
+       select USE_GENERIC_EARLY_PRINTK_8250
 
 config MSCC_OCELOT
        bool
        select GPIOLIB
        select MSCC_OCELOT_IRQ
-       select SYS_HAS_EARLY_PRINTK
-       select USE_GENERIC_EARLY_PRINTK_8250
 
 comment "FIT/UHI Boards"
 
@@ -65,6 +65,14 @@ config FIT_IMAGE_FDT_XILFPGA
          Enable this to include the FDT for the MIPSfpga platform
          from Imagination Technologies in the FIT kernel image.
 
+config FIT_IMAGE_FDT_OCELOT_PCB123
+       bool "Include FDT for Microsemi Ocelot PCB123"
+       select MSCC_OCELOT
+       help
+         Enable this to include the FDT for the Ocelot PCB123 platform
+         from Microsemi in the FIT kernel image.
+         This requires u-boot on the platform.
+
 config VIRT_BOARD_RANCHU
        bool "Support Ranchu platform for Android emulator"
        help

diff --git a/arch/mips/generic/Platform b/arch/mips/generic/Platform
index 0dd0d5d..879cb80 100644 (file)
--- a/arch/mips/generic/Platform
+++ b/arch/mips/generic/Platform
@@ -16,4 +16,5 @@ all-$(CONFIG_MIPS_GENERIC)    := vmlinux.gz.itb
 its-y                                  := vmlinux.its.S
 its-$(CONFIG_FIT_IMAGE_FDT_BOSTON)     += board-boston.its.S
 its-$(CONFIG_FIT_IMAGE_FDT_NI169445)   += board-ni169445.its.S
+its-$(CONFIG_FIT_IMAGE_FDT_OCELOT_PCB123) += board-ocelot_pcb123.its.S
 its-$(CONFIG_FIT_IMAGE_FDT_XILFPGA)    += board-xilfpga.its.S

diff --git a/arch/mips/generic/board-ocelot_pcb123.its.S b/arch/mips/generic/board-ocelot_pcb123.its.S
new file mode 100644 (file)
index 0000000..5a7d5e1
--- /dev/null
+++ b/arch/mips/generic/board-ocelot_pcb123.its.S
@@ -0,0 +1,23 @@
+/* SPDX-License-Identifier: (GPL-2.0 OR MIT) */
+/ {
+       images {
+               fdt@ocelot_pcb123 {
+                       description = "MSCC Ocelot PCB123 Device Tree";
+                       data = /incbin/("boot/dts/mscc/ocelot_pcb123.dtb");
+                       type = "flat_dt";
+                       arch = "mips";
+                       compression = "none";
+                       hash@0 {
+                               algo = "sha1";
+                       };
+               };
+       };
+
+       configurations {
+               conf@ocelot_pcb123 {
+                       description = "Ocelot Linux kernel";
+                       kernel = "kernel@0";
+                       fdt = "fdt@ocelot_pcb123";
+               };
+       };
+};